CN103882504B - A kind of grease-removing agent of silicate - Google Patents
A kind of grease-removing agent of silicate Download PDFInfo
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- CN103882504B CN103882504B CN201410145042.4A CN201410145042A CN103882504B CN 103882504 B CN103882504 B CN 103882504B CN 201410145042 A CN201410145042 A CN 201410145042A CN 103882504 B CN103882504 B CN 103882504B
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- grease
- removing agent
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- silicate
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Abstract
The invention discloses a kind of grease-removing agent of silicate, the components by weight percent proportioning of described grease-removing agent is as follows, isocaprylic acid: 0.5-2 part; Ethylene glycol monobutyl ether phosphoric acid ester: 3-5 part; ANTAROX? L62:1-4 part; ANTAROX? L64:1-4 part; Sodium hydroxide: 35-48 part; EDTA.2Na:0-1 part; Starso: 4-6 part; Sodium carbonate: 0-1 part; Sunmorl N 60S: 0-0.5 part; Tripoly phosphate sodium STPP: 0-0.3 part.
Description
Technical field
The invention belongs to technical field of chemistry, be specifically related to a kind of grease-removing agent of silicate.
Background technology
Hot-rolled steel sheet is after cold rolling process, and the residual ROLLING OIL of surface of cold-rolled steel plate attachment, iron powder, the hydraulic efficiency oil of leakage, gear oil, ash grades impurity.For improving the quality of products, before cover annealing operation, surface of steel plate must clean up, and simultaneously in order to the steel band adhesion that high temperature when preventing from annealing produces, after cleaning, surface of steel plate requires the SiO of some amount
2residual to form the sealing coat between steel plate.This just requires, containing appropriate silicate component in grease-removing agent, to complete the process of cleaning and coated silicon-dioxide, too high or too low SiO in electrolytic degreasing process simultaneously
2residual quantity is all bad to the quality of the finished product.
China is as Chan Gang state maximum in the world, and the output of cold-rolled steel sheet is also the first in the world.So be also huge to the grease-removing agent market requirement of rolling rear cleaning steel plate, grease-removing agent generally uses on professional degreasing unit.The degreasing unit of general complete set comprises and embathing, spray, chemical degreasing mode and the electrolytic degreasing mode such as to scrub, traditional old-fashioned unit operation speed is at 40m/min-120m/min, total scavenging period is in 5-7 second, now in order to enhance productivity, the speed of the degreasing unit of newly reaching the standard grade generally all brings up to 200m/min-400m/min, total scavenging period also shortens to 2-5 second, wherein the shortest time of electrolytic degreasing section is only had an appointment about 1 second, although made strengthening design to cleaning facility, but also require simultaneously grease-removing agent have high surfactivity and excellent cleansing power want can rapidly on steel plate drawout play a role, higher alkali content also will be had to acquire the faster and better electrolytic cleaning effect of higher electric current competence exertion to increase electroconductibility.
The composition of grease-removing agent and action principle: grease-removing agent is generally made up of caustic alkali, tensio-active agent, water glass and additive, mainly make use of the saponification reaction of alkali to Ester in ROLLING OIL and the emulsifying effect of tensio-active agent, by the matting mode such as wetting, infiltration, rolling off, emulsion dispersion with produce a large amount of bubble at surface of steel plate dirt peeled off electrolytic degreasing mode that also emulsion dispersion opens by the oily waste degradation of surface of steel plate under the effect of electric current.
The effect of tensio-active agent is the surface tension reducing alkali lye, and alkali lye can be made to infiltrate surface of steel plate fast on the one hand and dirt is peeled off, again dirt emulsion dispersion being avoided being deposited on surface of steel plate in alkali lye causes secondary pollution on the other hand.
The domestic grease-removing agent market status: the production of present domestic grease-removing agent and use are mainly based on solid, and liquid grease-removing agent only has imported product just can reach the user demand of high speed degreasing unit at present, is mainly monopolized by the product of Henkel KGaA company.Because the comparision of production of solid phase prod is simple, mainly the mixing of various raw material, the production of liquid product then relative complex many, because wherein containing the water not having cleaning performance of 50-70%, liquid product will reach the cleansing power equal with solid phase prod just to be needed to solve Railway Project: 1. will have higher surfactivity and washing power and more surfactant content; 2. the solvability of tensio-active agent under high-alkali hypersaline environment and stability problem; 3. the problems of stability in storage of high-alkali high electrolyte content liquid product.This also means the raw materials cost higher than solid-not-fat agent, the packing cost of liquid product is also much higher in addition, but liquid product has obvious advantage under equal cleaning condition, first be liquid product be easy to dissolve easy to use, during dissolving, heat release is few safer, wash the residual less easier rinsed clean in rear surface with liquid product in addition, after washing, higher surface quality can be obtained.
The problem of current domestic liquid grease-removing agent product be otherwise containing surfactant content low, cleaning performance is bad, otherwise be due to the low needs of alkalinity very few working substance content higher concentration use add corresponding various cost.Domestic liquid grease-removing agent product will reach the product with imported product equivalent effect, does not also have as far as we know at present, so exploitation liquid-type efficient grease-removing agent product is necessary, can fill up the blank in this field.
Summary of the invention
For deficiency of the prior art, the object of the present invention is to provide a kind of grease-removing agent of silicate.
To achieve these goals, the technical scheme that the present invention takes is:
A grease-removing agent for silicate, is characterized in that: the components by weight percent proportioning of described grease-removing agent is as follows
Isocaprylic acid: 0.5-2 part
Ethylene glycol monobutyl ether phosphoric acid ester: 3-5 part
ANTAROXL62:1-4 part
ANTAROXL64:1-4 part
Sodium hydroxide: 35-48 part
EDTA.2Na:0-1 part
Starso: 4-6 part
Sodium carbonate: 0-1 part
Sunmorl N 60S: 0-0.5 part
Tripoly phosphate sodium STPP: 0-0.3 part.
Preferably, the components by weight percent proportioning of described grease-removing agent is as follows
Isocaprylic acid: 1 part
Ethylene glycol monobutyl ether phosphoric acid ester: 4 parts
ANTAROXL62:2.5 part
ANTAROXL64:2.5 part
Sodium hydroxide: 40 parts
EDTA.2Na:0.8 part
Starso: 5 parts
Sodium carbonate: 0.5 part
Sunmorl N 60S: 0.5 part
Tripoly phosphate sodium STPP: 0.2 part.
Also preferred, the components by weight percent proportioning of described grease-removing agent is as follows
Isocaprylic acid: 0.5 part
Ethylene glycol monobutyl ether phosphoric acid ester: 3 parts
ANTAROXL62:1 part
ANTAROXL64:1 part
Sodium hydroxide: 35 parts
EDTA.2Na:1 part
Starso: 4 parts
Sunmorl N 60S: 0.5 part.
The selection of the tensio-active agent be suitable for:
Solid-not-fat agent product is all generally to decide clean-out system with EO-PO block polyether type nonionogenic tenside, is equipped with caustic alkali and various auxiliary agent composition.There is excellent cleaning performance and the low whipability more than cloud point, substantially can meet the processing requirement of production scene.But polyethers is at highly basic, can not dissolve in the liquid product of high electrolyte content, effective solubilizing agent must be used just to make it to be uniformly dissolved under the condition of strong basicity polyelectrolyte, mix and stablize qualified product.
The main component of solid electrolytic grease-removing agent is: sodium hydroxide, Starso, sodium carbonate, tertiary sodium phosphate, tripoly phosphate sodium STPP, Sunmorl N 60S and polyethers etc.And the liquid product composition of our development is similar to it, just except sodium hydroxide, the amount of other washing assistants all decreases, add the content of water and solubilizing agent tensio-active agent simultaneously, ensure that total solid content is not less than 40%, wherein the content of tensio-active agent is at 5-10%.
The development key of liquid grease-removing agent is under the condition of highly basic, polyelectrolyte, selects emulsification cleaning well also to want the tensio-active agent that lathering property is very low simultaneously.Phosphate ester surfactant has applied original advantage in this respect, by suitable screening with compositely just can meet above requirement, but emulsification cleansing power does not also reach service requirements when the phosphoric acid ester as anionic is used alone, also composite use to could meet the requirement of cleaning performance with the nonionic surface active agent with good cleaning performance, ensure quality product.
Selecting of ethylene glycol monobutyl ether phosphoric acid ester solubilizing agent
Market does not have ready-made proper product can use, only have the more efficient phosphoric acid ester solubilizing agent of oneself synthesis.Through laboratory repetition test, finally determine to use the ethylene glycol monobutyl ether phosphoric acid ester of ethylene glycol monobutyl ether and Vanadium Pentoxide in FLAKES Reactive Synthesis to make solubilizing agent, the highlyest can to dissolve in the sodium hydroxide solution of 45%, can containing sodium hydroxide at 35-40% in the solution after dissolving.
Ethylene glycol monobutyl ether phosphoric acid ester synthesis technique is sketched:
The ethylene glycol monobutyl ether phosphoric acid ester that we adopt be spent glycol monobutyl ether and phosphorylation agent Vanadium Pentoxide in FLAKES in molar ratio 2.5:1 react 5 hours at 80 DEG C, add the 2%(wt of total amount when acid number is at 450-480mgKOH/g) water termination reaction and obtain.
The use of isocaprylic acid
Pass through great many of experiments, find that isocaprylic acid solvability in strong caustic is good, also good solublization is had to various nonionic surface active agent, this whipability in sodium hydroxide solution is very low, work in coordination with solubilising effect with ethylene glycol monobutyl ether phosphoric acid ester remarkable simultaneously, also significantly improve Starso solubleness wherein.
Comprehensive cleaning performance and foaming properties, tensio-active agent can only use polyethers low-foaming surfactant, cleaning performance self foaming power good own is low also has froth breaking effect to other whipability material, consider the HLB matching problem needed for the emulsion dispersion of greasy dirt dirt, require that the HLB of emulsifying agent is within the scope of 10-11, we select composite its HLB that makes of ANTAROXL62 and ANTAROXL64 two kinds of polyethers also to have relatively lower lathering property at 11, ANTAROXL62.
The applicable cases of liquid grease-removing agent:
Several steel mills application feature at home, working conditions:
Matting working concentration: 1-2%;
Electrolytic cleaning working concentration: 2-5%;
Use temperature: 65-90 DEG C;
Electrolytic cleaning current density: 15-20A/dm
2;
Wash rear plate planar condition:
To deoil effect: remove 98%, carbon left 20mg/m
2(two-sided);
De-iron powder effect: remove 95%, residual iron 20mg/m
2(two-sided);
Washing rear surface of steel plate SiO2 content is 1-3mg/m
2, annealing adhesion phenomenon is slight;
Wash rear surface of steel plate reflectivity: >=90%
Beneficial effect
The core of developing products is that synthesis produces this efficient solubilizing agents of ethylene glycol monobutyl ether phosphoric acid ester and nonionic is dissolved in strong caustic become possibility, adopts isocaprylic acid to make Starso in strong caustic, have certain solubleness.It is high that electrolytic degreasing agent product based on this configuration has working substance content, and effective feature, meets the operation requirement of Modern High-Speed electrolytic degreasing unit.Solid-not-fat agent can be replaced in actual applications, identical result of use can be reached and the quality of final finished is improved under equal working conditions.And for using the producer of inlet liquid product react the cleaning performance of this developing products and the quality of finished product and use inlet liquid product suitable, significantly do not distinguish, because the working concentration of this developing products is lower, the loss per ton steel of producer also decreases, the another production cost also reducing producer because cost ratio imported product is low thus this developing products is successfully, has the value widelyd popularize.
Embodiment
Embodiment 1
The special grease-removing agent of a kind of high speed electrolytic degreasing unit, the components by weight percent proportioning of described grease-removing agent is as follows
Isocaprylic acid: 1 part
Ethylene glycol monobutyl ether phosphoric acid ester: 4 parts
ANTAROXL62:2.5 part
ANTAROXL64:2.5 part
Sodium hydroxide: 40 parts
EDTA.2Na:0.8 part
Starso: 5 parts
Sodium carbonate: 0.5 part
Sunmorl N 60S: 0.5 part
Tripoly phosphate sodium STPP: 0.2 part.
Product performance are tested, in table one:
Table one
| Project | Index |
| Outward appearance | Colourless to light yellow liquid |
| Moisture and volatile matter content | ≤65% |
| PH value (2% solution) | ≥12 |
| Free alkalinity | ≥15 |
| Density | ≥1.2g/cm 3 |
| High-temperature stability (60 DEG C, 6h) | Qualified |
| Low-temperature stability (0 DEG C, 24h) | Qualified |
| Washing power (3% solution, 60 DEG C) | ≥96% |
| Foaming properties (70 DEG C, ml): instant | ≤10 |
| 1 minute | ≤2 |
| Corrodibility (2h, 80 DEG C, 45# steel) | Qualified |
| Specific conductivity (20 DEG C, 2% solution) | >100mS/cm |
The like product Parcocleaner1507 index of Henkel KGaA widespread use is at home carried out contrast test, the results are shown in Table two
Table two
From measured data, every lab index of two kinds of grease-removing agents relatively, the basicity of product of the present invention, PH and specific conductivity higher, be conducive to improving further in electrolytic cleaning production scene electric current and improve cleaning performance or shorten scavenging period.
Last it is noted that obviously, above-described embodiment is only for the application's example is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among the protection domain of the application's type.
Claims (1)
1. a grease-removing agent for silicate, is characterized in that: the components by weight percent proportioning of described grease-removing agent is as follows
Isocaprylic acid: 1 part
Ethylene glycol monobutyl ether phosphoric acid ester: 4 parts
ANTAROXL62:2.5 part
ANTAROXL64:2.5 part
Sodium hydroxide: 40 parts
EDTA·2Na
: 0.8 part
Starso: 5 parts
Sodium carbonate: 0.5 part
Sunmorl N 60S: 0.5 part
Tripoly phosphate sodium STPP: 0.2 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410145042.4A CN103882504B (en) | 2014-04-11 | 2014-04-11 | A kind of grease-removing agent of silicate |
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|---|---|---|---|
| CN201410145042.4A CN103882504B (en) | 2014-04-11 | 2014-04-11 | A kind of grease-removing agent of silicate |
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| Publication Number | Publication Date |
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| CN103882504A CN103882504A (en) | 2014-06-25 |
| CN103882504B true CN103882504B (en) | 2016-03-23 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347416B (en) * | 2015-11-05 | 2020-01-31 | 威海翔宇环保科技股份有限公司 | defoaming agent for seawater desalination |
| CN106702405A (en) * | 2017-03-16 | 2017-05-24 | 冯志海 | Special degreasing agent for low-current-density silicon-containing strip steel and preparation method of degreasing agent |
| CN107513757A (en) * | 2017-10-19 | 2017-12-26 | 江门市濠成化工科技有限公司 | A kind of Steel Chemical degreasing powder and its preparation and application |
| CN107794561A (en) * | 2017-10-19 | 2018-03-13 | 江门市濠成化工科技有限公司 | A kind of steel electrolytic degreasing powder and its preparation and application |
| CN107557851A (en) * | 2017-10-19 | 2018-01-09 | 江门市濠成化工科技有限公司 | A kind of alloy electrolytic degreasing powder and its preparation and application |
| CN108950574A (en) * | 2018-08-03 | 2018-12-07 | 广州正利金属表面处理剂有限公司 | Without phosphorus low bubble degreasing agent and preparation method thereof, application method |
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